a = int(input())
if a >= 1800:
    print('1')
elif a >= 1600:
    print('2')
elif a >= 1400:
    print('3')
elif a >= 1200:
    print('4')
elif a >= 1000:
    print('5')
elif a >= 800:
    print('6')
elif a >= 600:
    print('7')
elif a >= 400:
    print('8')
else:
    print('error') a = int(input()) a int(input()) int input() input if a >= 1800:
    print('1')
elif a >= 1600:
    print('2')
elif a >= 1400:
    print('3')
elif a >= 1200:
    print('4')
elif a >= 1000:
    print('5')
elif a >= 800:
    print('6')
elif a >= 600:
    print('7')
elif a >= 400:
    print('8')
else:
    print('error') a >= 1800 a 1800 print('1') print '1' elif a >= 1600:
    print('2') a >= 1600 a 1600 print('2') print '2' elif a >= 1400:
    print('3') a >= 1400 a 1400 print('3') print '3' elif a >= 1200:
    print('4') a >= 1200 a 1200 print('4') print '4' elif a >= 1000:
    print('5') a >= 1000 a 1000 print('5') print '5' elif a >= 800:
    print('6') a >= 800 a 800 print('6') print '6' elif a >= 600:
    print('7') a >= 600 a 600 print('7') print '7' elif a >= 400:
    print('8') a >= 400 a 400 print('8') print '8' print('error') print 'error' a = int(input()) int(input()) a
a = int(input())
if a >= 1800:
    print('1')
elif a >= 1600:
    print('2')
elif a >= 1400:
    print('3')
elif a >= 1200:
    print('4')
elif a >= 1000:
    print('5')
elif a >= 800:
    print('6')
elif a >= 600:
    print('7')
elif a >= 400:
    print('8')
else:
    print('error')